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Make a Marine EFI code tool for less than $1.00

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Old 07-25-2012, 09:59 PM
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No only 93-2000
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Old 07-26-2012, 01:15 PM
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dumb question what takes it out of service mode do you just pull the pins out or is there a procedure? I have heard of early models sometimes getting stuck in service mode.
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Old 07-26-2012, 03:57 PM
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This was written to address the MEFI 1 through 4 family of controllers ONLY. And no you can not inadvertently stick the ECU in service mode.
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Old 07-26-2012, 10:01 PM
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Works like a charm really simple thanks for this!
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Old 07-26-2012, 10:03 PM
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I did try to clear the codes using the throttle and it didn't work. I pushed it to full throttle then back to idle and then pulled the pins out.
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Old 07-27-2012, 12:59 PM
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Key off
insert A to B jumper
Key on Engine off
Full throttle then return to idle
Key Off
Pull Jumper


Originally Posted by bikercrze1
I did try to clear the codes using the throttle and it didn't work. I pushed it to full throttle then back to idle and then pulled the pins out.
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Old 07-27-2012, 01:12 PM
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Optional fire extinguisher not included
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Old 07-30-2012, 08:59 AM
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Awesome thanks!
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Old 07-31-2012, 08:44 AM
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great info , but how do you remove it from service mode?
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Old 07-31-2012, 01:50 PM
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Originally Posted by riverboater
great info , but how do you remove it from service mode?
Pull the Jumper
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